545,540 HELLBERG DAN On some possible etiological factors of cervix and penis cancer : with special reference to smeling, sexual behaviour and contraception : [thesis] / Dan Hellberg ; Uppsala University. — Uppsala : Academiae Ubsaliensis, 1987. — 51 s. ; 25 cm (Acta Universitatis Upsaliensis : Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 0282-7476 ; 121) ISBN 91-554-2102-4